Automatic pump control



w. FOSTER AUTOMATIC PUMP CONTROL Original Filed may 21. 1923 Zizvenior VVZZZZeZ L. Fasler V 7km M W ll .5" Afforneys Patented ct. 21, 1924.

WALTER L. FOSTER, OF WHITTIER, CALIFORNIA, ASSIG-NOR T0 WILLIAM MEREDITH AND \V. H. TAYLOR, BOTH OF HUNTINGTON BEACH, CALIFORNIA, AND V. W.

BAILEY, OF PASADENA, CALIFORNIA.

AU'ror/iA'rIo rut/Ir conrson.

Application filed May 21, 1923, Serial No. 640,547. Renewed August 30, 1924.

' To all whom it may concern:

Be it known that I, WALTER L. FosTER, a citizen of the United States, and resident of 'Whittier, in the county of LosAngeles and State of California, have invented new and useful Improvements in an Automatic Pump Control, of which the following is a specification.

This invention relates to automatic controls for boiler feed pumps of the character illustrated and disclosed in United States Patents 1,270,138, dated June 18, 1918, and 1,302,350, dated April 29, 1919. The object of this, invention is to provide details of structure whereby the durability, simplicity, and economy of structure are increased and the liability of trouble in operation decreased.

These objects together with other objects and corresponding accomplishments are ob tained by means of the embodiment of my invention illustrated in the accompanying drawing, in which:

Fig. 1 is a central sectional view through the control; Fig. 2 is an enlarged view of a fragment of the valve linkage; Fig.3 is a section as seen on the line 3-3 of Fig. 1; and Fig. 4 is a section as seen on the line 44 of Fig. 2. 7

Referring more particularly to the drawing, an equalizing chamber is indicated by 5. This chamber is preferably of cylindrical form and has a bottom in which a stuffing box 6 is disposed. A nipple 7 is provided in the bottom to which a pipe 8 is adapted to be engaged and connected with a boiler below the water level. Slidably extending through the stufiing box is an adp justing rod 9 for the bucket. Secured by bolts to the top of the chamber 5 is a head 10. The head has a dome portion 11 and a valve mechanism chamber 12. This chamber has a passage closed by a head 13 provided with a threaded nipple to receive a pipe 14 adapted to be connected to the steam dome of a boiler. Connected to the valve chamber is a whistle indicated generally by 15. A fitting 16 connects the valve chamber with a steam line leading to a boiler feed pump.

Disposed within the equalizing chamber is the bucket 17 which is hollow to form a The bucket is mounted upon a rod 18 which is pivotally connected at its upper end to a lever 19. The lever is bifurcated at itsother end by havinga long slot-formed therem. Extending into the slot is the head of a post 20, the lever 19 being connected thereto.v Post 20 is adjustable so that it may the lever at one end and to a lever 27. The

lever 27 is pivotally mounted in the head by means of a pin 28. At the end of the lever is a link 29 supporting a weight 30 mounted within the dome 11. It is obvious that the weight 30 acts through lever 27 to tend to raise the lever 19 and thereby close the valve 22 so as to out of]? the supply of steam to the pump.

The bucket float 17 is open at the top so that it may be filled with water. WVhen the bucket is entirely submerged in the water its weight is comparatively small and the counter weight 30 will raise the lever 19 so that the valve 22 may be closed upon its seat so far as permitted by reason of an adjustable stop 31 in the valve fitting which is engaged by the end of the valve stem 23. As soon as the water level drops so that art of the bucket is above the water, the added weight becomes great enough to overcome the action of the counter weight 30 and the bucket fioat is moved downwardly,

thereby moving the valve 22 from closed position and admitting more steam to the feed pump. The bucket can be moved upwardly and downwardly upon the rod 18 by means of the rod 9 so that the position of level and valve is provided. The whistle i to indicate low water. When due to lack Z a port in said chamber communicating Witlr a steam pump connection, a valve controlling said port, a valve lever for operating said valve,- an ad ustable pivot post to which said lever is connected, a: bucket float in said equalizing chamber secured to said valvelever and tending to open said valve, a Weight lever pivotally mounted in said head and secured at one end to said valve lever,

and a counter-Weight disposed in said dome and acting upon the other end of said Weight lever.

2. A boiler feed control comprising an equalizing chamber having a Water connection at the bottom, a head for said chamber a steam connection communicating with said liead, a port in said head communicating With a steam pump connection, a valve controlling said port, a valve lever for operating said valve, an adjustable pivot post to Which said valve lever is connected, a bucket float in said chamber secured to said lever and tending to open said valve, a Weight lever pivotally mounted in said head and: secured at one end to said valve lever, and a counterweight acting upon' the other end o1 said Weight lever; r

In Witness that I claim the foregoing l have hereunto subscribed my name this 3rd day of May, 1923.. 7

WALTER L. FQSTER. 

